Fatigue Strength of Copper-Infiltrated Sintered Iron Compacts

Mechanical Properties and Hardness Results of the Medium Frequency Induction Sintered Iron Based Powder Metal Bushings

In this study; iron based powder metal (PM) bushing compacts were sintered via medium frequency induction heating system. Iron based powders were mixed with 2 wt.% copper (Cu), 0.3 wt.% carbon (C) and 1 wt.% zinc stearat (Zn-st) via V-Type mixer. PM compacts were sintered by 2 different sintering processes. One of them was conventional sintering method other was medium frequency induction sinte...

Effect of Stress Pattern on Fatigue Strength of Sintered Silicon Nitride by

It is difficult to conduct cyclic tensile fatigue tests for fine ceramics because of its high brittleness, and a little eccentricity of loading axis and gripping device gives inaccurate strength data. So, a major part of cyclic fatigue tests have been carried out under bending load conditions, for the allowance of misalignment of loading axis is generous to some extent in the case of bending fa...

Some Aspects of Infiltration of High Speed Steel Based Composites with Iron Addition Wybrane Zagadnienia Dotyczące Infiltrowanych Kompozytów Stal Szybkotnąca – Żelazo-miedź

Attempts have been made to describe the influence of the production process parameters and additions of iron powders on properties of copper infiltrated HSS based composites. The powder compositions used to produce skeletons for further infiltration were: M3/2, M3/2+20% Fe and M3/2+50% Fe. The powders were cold pressed at 800 MPa. The infiltration process was carried out in vacuum. Both green c...

Structure and Strength of Iron-Copper-Carbon Nanotube Nanocomposites

Nanocomposite materials of the Fe-Cu system with/without small addition of carbon nanotubes have been synthesized by mechanochemical activation of elemental Fe and Cu powders in a high-energy planetary ball mill and have been examined by the X-ray diffraction method, SEM and the thermopower methods; the tensile strength of the materials obtained has been estimated. The metastable (Fe, Cu) super...

Strength evaluation of sintered ceramics by dynamic crack path model